re https//edugen wileyplus.com/ ainfr uni LUS Cutnell, Physics,1 WileyPLUS: I Co

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re https//edugen wileyplus.com/ ainfr uni LUS Cutnell, Physics,1 WileyPLUS: I Contact ls T Log.Out ALGEBRA BASED PHYSICS (PHYS 2010 and 2020) udy & Practice Gradebook ORION Downloadable eTextbook en Assignment FULL SCREEN PRINTER VERSION 4BACK NEXT OURCES Chapter 02, Problem 33 blem 18 Review Interactive Solution 2.33 in preparation for this problem. Suppose a car is traveling at +24.6 m/s, and the driver sees a traffic light turn red. After 0.397 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at stopping distance of the car, as measured from the point where the driver first notices Number the tolerance is +-2% lem 49 lem 64 Units Study Click if you would like to Show Work for this question: Open Show Work By accessing this Question Assistshice, you ill leam while you cam points based on the Point Potential Rakeyst by your inatuiztod SAVE FOR LATER SUBMIT ANSWER Question Attempts: 0 of S used Earn Maximum Points available only if you answer this question correctly in four attempts or less. o and Windows

Explanation / Answer

We know from eqn of motion

v^2 = u^2 + 2 a S

when it stopped, v = 0 ; u = 24.6 m/s ; a = -8 m/s^2

0 = 24.6^2 - 2 x 8 x S => S = 37.82 m

before application of brakes,

S' = 24.6 x 0.397 = 9.77 m

So the total distance is:

D = S + S' = 37.82 + 9.77 = 47.59 m

Hence, D = 47.6 m

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